Machine for grinding forage



Oct. 11, 1932. M. H. GAT ELY MACHINE FOR GRINDING FQRAGE Original FiledDec. 3, 1927 3 Sheets-Sheet 1 M4777}? H; 'afe/y ATTORNEY WITNESS:

Oct. 11, 1932. M. H. GATELY MACHINE FOR GRINDING FOBAGE Original Filedbee. 3, 1927 3 Sheets-Sheet 2 Mar/2' h. afely ATTOR N EY WITNESW 1932-MQH. GATELY 1,882,491

MACHINE FOR GRINDING I Original Filed Dec. 3, 1927 3 Sheets-Sheet 3 in:l'llh. I'Tn YIII/l/II/l.

iNVENTOR j WlTNESs: ATTORNEY Patented Oct. 11, 1932 MARTIN nEnRY GATELY,or HENDERSON, NEBRASKA MACHINE FOR GRINDING- FORAGE Application filedDecember 3, 1927, Serial No. 237,530. Renewed February 25, 1932.

The object of this invention is to provide a machine in which theincoming material is moved by a conveyor beneath a'series oflongitudinally extending toothed devices, termed 5fishbacks, the seriesincluding both stationary and swinging elements, said elements servingto cut the ties from the bundles, divide the stalks, and carry thematerial to a rotary grinding device cooperating with 10 stationarygrinding elements including a toothed concave, the material passingthru.

a screen of a degree of fineness suitable for the product, before beingdischarged in position for reception by an elevator and 15 loader.

A. further object is to employ aconstruction of the type indicated inwhich the current of air created by the movement of the rotary grindingelement will facilitate the grinding operation, and further to employ amachine of economical and durable con struction which will be under thecontrol of a governor of the type disclosed in my pending application,Ser. No. 237,531, in which a special form of clutch is claimed, saidgovernor insuring a pickup at a uniform low speed regardless of theload, and acting to stop the machine if the latter is materiallyretarded in operation from any cause. The application named has maturedinto Patent No. 1,720,952.

A further object is toemploy improved grinding elements, mounted in animproved manner. 7

With the foregoing and other objects in view, the invention consists inthe novel construction and arrangement of elements described,illustrated and claimed, it being un derstood that modifications may bemade within the scope of the claim without departing from the spirit ofthe invention.

In the drawings forming part of this application, V

Figure 1 is a view showing the operative elements chiefly in elevation,a portion of the housing being removed.

Figure 2 is a plan view of the structure of Figure 1 with a portion ofthe housing broken away.

Figure 3 is a horizontal section, on line 33 of Figure 1.

Figures 41 and 5 are perspective views of devices in the upper centralpart of Figure 1 between which the material passes in flowing from theconveyor into the grinding element or elements.

Figure 6 is a section on line 6-6 of Figure 3, showing one of thegrinding devices, and the manner of mounting the latter. a.

Figure 7 is a section on line 7-7 of Fig ure 1.

a Figure 8 is a section on line 88 of F igure 1. r j i Figures 9 and 10are views in section 5 thru the fishbacks, or stationary and movablefeeding elements at the upper central portion of Figure 1, and Figure 9being on line 99 of said Figure 1.

The material to be ground is carried by conveyor 10 mounted in frame 11,beneath the fishbacks in the upper central portion of Figure 1, andpasses thence thru opening 12 to the housing 18 of the grinder per se. Aplate 1 1 is mounted at for swingingmovement ust within opening 12, andserves as a shield and in turn to direct the material over the pan orapron 16, illustrated in detail in Figure 4. This device being pivotedat l7. and including an end portion which extends just below thedischarge end of the conveyor 10. This conveyor may be of any suitabletype, including sprocket chains and trans verse bars or slats designated10. The chains pass over wheels on shafts 20 and 21, an idler beingshown at 22. A supporting device or leg member 23 is mounted below themiddle portion of the conveyor frame, vbeing pivoted at its lower ends,as shown at 24 and connected by'means'of a chain or the like 25 with themiddle portion of the housing of the grinder.

The conveyor frame 11 mounts upper eX- tensions or side members 27, andbetween side members 28, I mount a plurality of fishbacks or feedingdevices. These elements may be of inverted channel shape, and are shownin cross section in Figures 9 and 10, the flanges of the channels eachcarrying a series of teeth as indicated in Figure 1, these teeth be ingcut in a direction to permit of the feeding of the material from theconveyor to the housing of the grinder, or to aid in such feeding and toimpart a preliminary separation or abrasive action.

The fishbacks thus formed and designated 30, 31 and 32 are movable,being mounted for swinging action, in view of the chain connection '88,and the link connection 3 1, the element last named constituting an armmounted radially with reference to shaft 35 to which movement isimparted from shaft 36, by eccentric or crank elements, as indicated at37. V

The movable fishbacks 30, 31, 82 are connected by cross bars 38, and thestationary fishbacks l0 and ll are connected by transverse bars 42.These bars last named are mounted at their ends as shown at 13.

The shaft 36 carries a fly wheel at, normally loose on the shaft butadapted for operative connection with the shaft when a predeterminedminimum speed has been imparted to the fly wheel, as disclosed in myaforesaid pending application.

The shaft 36 carries a pulley wheel 46, and belt e7 passes over thiswheel and over pulley wheel 48 on shaft l9 of the rotary grinder shownin Figures 1 and 3. eludes the spider elements 50 and 51, each having ahub portion, such as 52 providing bearings for mounting the grinder onshaft 19. Transverse bars 54 extend between the spider elements 50 and51 and mount the grinders or cones 55, of the form shown in the detailviews, these devices being secured by bolts or stems 56 and nuts 57.These devices have a corrugated or spirally channeled surface, providinga most effective form of abrasive element.

Stationary grinding elements, also of cone form, and designated 60,cooperate with the elements 55, and are of course mounted to provide theproper spacing between said sta tionary elements and the elementsmounted on the rotatable device or principal grinder. A concave 62extends between the mounting element 61 of the stationary grinders, andthe discharge opening, in the lower central portion of the housing, anddesignated 63. This concave is provided with a corrugated or othersuitable form of grinding surface for effecting further abrasive actionbefore the discharge of the material thru opening 63, and the teeth orcorrugations on element 62 tend to hold the material until fully ground.

A screen 65 is mounted between the guiding devices 66 in the housing andis detachable, permitting of the use of a screen having perforations orapertures therein of a size suitable for the grinding operation underway, in order to efiiect the exact separation or screening desired. Aplurality of screens, with openings of different size, and differentveyor.

This grinder in-' forms, will be provided for use with the machine.

The mounting of the grinding devices is illustrated in detail,especially in Figures 6, 7 and 8, and the mounting of the fishbacks isshown in cross section in Figures 8, 9 and 10, t 1e movable oroscillating elements being designated 30, 31 and 32, and the stationaryfishbaclrs being'designated 10 and 4:1.

The material is fed into the machine easily and in a steady and uniformmanner, by the fishbaeks cooperating with the feeding con- On the returnstroke of the movable fishback, elements, the 'material is held by thestationary fishbacks which further pre vent the material from beingacted upon by the suction of the rotating grinder prior.

to entry of said material into the housing of this grinder. V

The governor referred vto as being disclosed in another application isan important element in the production of uniform feed and in control orautomaticrelease under the conditions stated.

The material to be groundby the rotat able grinding element first passesthe swinging gate 14:, and is deflected from the upper inner Wall of thehousing 13, and thence downwardly onto the rotary element, and the panor chute 16 below the member "14 materially facilitates distribution,causing the material to move in the right direction, While baffle plate16 keeps it from passing in front of the screen before being ground. Theprincipal grinding operation is effected between the cone shapedcorrugated moving grinding elements and the stationary members similarlyformed, and the corrugated plates and the teethof the rotary-ele ment,all material being discharged thru the lower opening of the housing, butany portion not discharged is carried around a sec- 0nd time for furtherpassage thru the machine, following the course indicated for thatportion of the material, the movement of which is described in detail.

What is claimed is:

In a machine for grinding forage, a grinding element, a housing withinwhich the element is mounted, a travelling feeding device, alternateoscillating and stationary feeding devices, of channel type, positionedabove the travelling element and means for mov ing the oscillatingdevices in a curved path for engaging material on the travellingelement, these means including crank hangers movable about a common axisnear corresponding ends of the channel devices; and devices comprisingrelatively movable members supporting the opposite end portions of themovable channel elements, permitting variable oscillating movementthereof.

In testimony whereofl aliix my signature.

MARTIN HENRY (LATELY-

